T-Mobile's parent company in Germany has appealed a court ruling that would forbid tying customers into a two-year contract when they by one of Apple's iPhones, according to a report.

Deutsche Telekom filed an appeal with the Regional Court of Hamburg against a preliminary injuction ordered by the court won by Vodaphone Group, Bloomberg reported. A hearing is scheduled for November 29.

The ruling prevents T-Mobile from selling the iPhone with two-year contracts or software that runs only on its network.

To comply with the ruling, T-Mobile began charging 999 euros ($1,479) for the standalone iPhone. The phone costs 399 euros with the contract.

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